Daishimizu Tunnel

The Daishimizu Tunnel (大清水トンネル) is a railway tunnel on the Jōetsu Shinkansen on the border of Gunma Prefecture and Niigata Prefecture, Japan.

See also: Shimizu Tunnel
Standard tunnel profile of Joetsu shinkansen

In 1978, the Dai-Shimizu tunnel was completed. This tunnel was dug for the Jōetsu Shinkansen that was to be completed in 1982. This tunnel was the world's longest railway tunnel at 22,200 m until the Seikan Tunnel was built.[1] During the construction, a fire created a large amount of smoke in the tunnel, and 16 workers died from carbon monoxide poisoning.[2][3] When this tunnel was completed, the travel time between Niigata and Tokyo went down to approximately one hour and forty minutes, three hours faster than using the Jōetsu Line.[4]

Also, when this tunnel was built, natural water was found during construction, which is now sold in bottles.[5]

References
  1. website on tunnels
  2. History of Joetsu Shinkansen
  3. Detail of the fire
  4. "Website on Shimizu tunnel". Archived from the original on 2006-02-07. Retrieved 2008-10-25.
  5. Website on water
Records
Preceded by
Simplon Tunnel		 Longest tunnel
1982–1988		 Succeeded by
Seikan Tunnel


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